Make so the script only moves and makes actions to the gameObject that its attached to.

Hello having a major problem, i've developed a script that can select, deselect and move a worker or hero. But if i spawn more than one in the scene then all the different workers will do the same order, even if THEY are not told to. Is there a way of fixing this? Thanks :)

here is my worker Controller

(worker and hero is the same thing) Dont think you will need the move to mousecursor position,

 #pragma strict
 
 var SelectedRing : GameObject;
 var Selected : boolean = false;
 
 var showGUI : boolean = false;
 
 var WorkerSpawn : GameObject;
 var Hero : GameObject;
 
 var lastHit: GameObject; // Keep track of last object clicked
 
 
 
 function Update ()
  {
   //Selects Worker && Deselects worker
   var ray: Ray = Camera.main.ScreenPointToRay(Input.mousePosition);
   var hit : RaycastHit;
   
       if(Input.GetMouseButtonDown(0))
       {
          if (Physics.Raycast(ray,hit) && hit.transform.gameObject == Hero)
          {
                    Selected = true;
               SelectedRing.SetActive(true);
          }
           else
          {
               Selected = false;
               SelectedRing.SetActive(false);
          }
       }
       
       //ShortKey To spawn other worker
       if(Input.GetKeyDown(KeyCode.Q))
       {
           showGUI = true;
       }
       
       //Instant Stop Any Movement
       if(Input.GetKeyDown(KeyCode.Space))
       {
           Hero.transform.position = transform.localPosition;
       }
  }
 
 function Start ()
 {
     SelectedRing.SetActive(false);
 }